BMW Knowledge Base

Technical articles, diagnostic guides and deep dives into problem BMW components.

951 articles in the base · updated regularly

All Cooling System 22 OBD-II Diagnostics 34 Transmission 16 Buying Guide 60 Engine Mechanical 377 Car Overview 327 Maintenance 47 Suspension 1 Electrical System 24

Model:

All 3-er G20 3-er F30 5-er G30 5-er F10 5-er E60 X3 G01 X3 F25 X4 G02 X5 G05 X5 F15 7-er G11/G12

Car Overview ⚡ Express

BMW G11/G12 (2015–2019): Body, Engines, and Common Problems, Explained

A complete breakdown of the BMW G11/G12 (2015–2019): Carbon Core body, B57 and B58 engines, common problems, maintenance advice, and a used-car buying checklist.

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BMW E39 (1995–2003): The Complete Guide to Buying, Owning, and Repairing the Legendary 5 Series

A complete guide to the BMW E39 (1995–2003): buying, ownership, and repair. Common problems, a buyer's checklist, and maintenance tips. Is the legendary 5 Series still worth buying in 2025?

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BMW M2 G87 (S58): Complete Guide to Buying, Ownership, and Common Problems

A complete guide to the BMW M2 G87 with the S58 engine: model overview, common problems (valve stem seal leaks, timing chain stretch, synchronizer wear), maintenance recommendations, a used-car buying checklist, and a comparison of transmissions and brake systems.

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BMW E53: The Complete Guide to Buying, Owning, and Repairing

The complete BMW E53 guide: buying, ownership, and repair. Best 2001–2003 models, reliable M54 and M62 engines, weak spots, and a pre-purchase checklist.

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BMW E39: The Perfect Sedan or a Car with a Catch? The Complete Owner’s Guide

A complete guide to the BMW E39: engine overview, common problems, maintenance tips, and a pre-purchase checklist. Find out why this sedan is still considered the benchmark—and how to avoid costly repairs.

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BMW E36: The Complete Guide to Buying, Owning, and Repairing — BimmerBrain

The complete guide to buying, owning, and repairing the BMW E36. Learn the weak spots: cooling system, rear subframe, VANOS. Buyer's checklist and maintenance advice.

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BMW X5 F15 (2014-2018): The Complete Buyer’s Guide — Engines, Weak Spots, Running Costs

A complete guide to the BMW X5 F15 (2014-2018): model overview, engines, common problems, maintenance, and a pre-purchase checklist. Find out which engines hold up, what to inspect, and whether this SUV is worth buying in 2025.

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BMW F22 (2 Series): Complete Guide to Buying, Maintenance, and Common Problems

Complete guide to the BMW F22 (2014–2021): model overview, common problems (oil leaks, valve carbon buildup, suspension wear), an N20/B48/N55/B58 engine comparison, the maintenance schedule, and a pre-purchase checklist. Advice on picking the right version.

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BMW F90 M5: Review, Problems, S63 Engine Life, and Whether to Buy in 2025

BMW F90 M5 review for 2025: specs, common problems (fuel system, VANOS, cooling), S63B44T4 engine life, cost of ownership, and buying advice for the last true non-hybrid M5.

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BMW X5 E70 (2007–2013): The Complete Guide to Buying, Maintenance, and Common Problems

The complete guide to the BMW X5 E70 (2007–2013): model overview, engine specifications, common problems and fixes, maintenance tips, and a checklist for buying a used example.